58 results about "Gingival sulcus" patented technology

A method and a device for effecting the cordless retraction of the gingival sulcus tissue prior to the taking of an impression of a tooth for making a crown or bridge which is attained by controlling any bleeding in the gingival sulcus area, and utilizing a dental dam preferably formed of a sponge or foam like material to contain an astringent fortified silicone impression material embedded about the prepared tooth, and using the patient's biting force to apply the necessary pressure onto the dam until the silicone impression material sets and adheres to the dam to enhance easy removal of the set impression material from the tooth. The dam is formed to accommodate either the posterior teeth or the anterior teeth.

A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a dam shaped to be fitted onto a tooth. In one embodiment, the well of the dam is pre-filled with a predetermined amount of a flowable retraction material having a heavy viscosity or putty consistency. The preloaded tooth dam is fitted to a prepared tooth so that when pressure is applied onto the tooth dam, the retraction material is displaced under pressure and forced into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. In another embodiment the cap is filled with a dilatant material. In another embodiment, the cap is filled with an impregnated compressible porous material. In yet another embodiment, the cap is pre-dosed with an astringent or hemostatic agent.

A gingival retraction material is prepared using fibrillated fibers to improve viscosity and combining taste-modifying agent, color agent, and kaolin filler to form a paste-like structure having the viscosity ranging from 31.0×10⁶ cP to 71.0×10⁶ cP. The gingival material is injectable into the patient's gingival sulcus to provide a physical active force that widens the patient's gingival sulcus by means of the material viscosity and also to control gingival tissue fluid and hemostasis so as to keep the gingival sulcus dry for further mold impressions.

A device for use in retracting a gingiva from a human tooth by widening a gingival sulcus with a dental composition. The device comprises a cannula with a free end having an opening for dispensing the dental composition. The free end is shaped to be inserted with its front in the entry of the gingival sulcus, and to laterally displace the gingiva from the tooth as the cannula is moved in the gingival sulcus. The invention may help to achieve a reliable and cost effective gingival retraction treatment.

A method for temporarily widening a gingival sulcus is provided using an uncured composition comprising a polymerizable monomer having at least one ethylenically unsaturated group, a photo polymerization initiator, a fine inorganic powder, and an astringent. The uncured composition is inserted within a gingival sulcus to be widened, and the composition is thereafter irradiated in situ to polymerize the composition. The result is a rubbery material that is easily removable from the widened sulcus.

A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a dam shaped to be fitted onto a tooth. The dam having a peripheral wall defining a well. The peripheral wall may be either pervious or impervious to light rays and opened at at least one end. The well of the dam is pre-filled with a predetermined amount of a flowable retraction material having a heavy viscosity or putty consistency. The preloaded tooth dam is fitted to a prepared tooth so that when pressure is applied onto the tooth dam, the retraction material is displaced under pressure and forced into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. In one form of the invention, the structure of the dam enables the retraction material to mechanically bond or adhere to the internal surfaces of the dam, permitting the retraction material to be removed simultaneously with the removal of the tooth dam to leave behind a clean enlarged sulcus.

Disclosed are applicators and methods injecting of a liquid anesthetic into a dental patient with no or minimal pain. In accordance with one embodiment the applicator is for intraligamentary injection and includes an elongated, thin member having an open distal free formed of a resilient and somewhat conformable material suitable for producing a substantially fluid-tight interface with the anatomic structures at the gingival sulcus to inject the anesthetic therein. In another embodiment the applicator includes a flexible skirt surrounding a sharpened cannula, with the cannula being movable with respect to the skirt. The skirt is arranged to receive the anesthetic to anesthetize the gum, whereupon the cannula can then pierce the gum to inject the anesthetic into the underlying anatomic structure.

A retraction material promoting both retraction and drying of the gingival sulcus around a tooth. The retraction material comprises an astringent and an absorbing or drying agent. The retraction material is placed with a syringe and capsule around the gingival sulcus prior to the taking of an impression in a dental procedure.

A gingival retraction system for retracting gingival tissue surrounding a selected tooth within the mouth of a subject is disclosed. In one aspect, the gingival retraction system has a gingival retraction cord and a handle. The gingival retraction cord has at least one lead portion and at least one retraction portion. Portions of the gingival retraction cord are positioned within the gingival sulcus surrounding the selected tooth. The handle can be used to tighten and shorten the portion of the gingival retraction cord positioned within the gingival sulcus surrounding the selected tooth.

A dental crown cementation soft tissue and biologic attachment protective membrane has a dental membrane and a membrane carrier. The dental membrane is attached within the membrane carrier for easy manual manipulation. The dental membrane is used during dental crown installation to prevent dental cement from leaking out from the interior cavity of the dental crown into the gingival sulcus and surrounding soft tissue. The dental membrane is placed atop a dental abutment onto which the dental crown is to be installed. The dental crown is pressed onto the abutment over the dental membrane, causing excess cement to be extruded from the interior cavity onto the dental membrane. The dental crown then has minimal excess cement. The dental crown is then removed as well as the dental membrane, the cement on the exterior crown surface is removed, and the adequately cemented dental crown is again attached to the dental abutment.

Disclosed is a probe for detecting a substance in the body for detecting a substance in the body in gingival crevicular fluid. The probe includes a gingival sulcus insert section and a sensitive part. The gingival sulcus insert section can be inserted into a gingival sulcus. The sensitive part is arranged on the gingival sulcus insert section and contains a detection substance for permitting optical detection of the substance in the body. A system for detecting a substance in the body is also disclosed. The system for detecting a substance in the body includes the probe for detecting a substance in the body, a light irradiator for irradiating light onto the sensitive part in the probe, and a photodetector for detecting optical information from an inside of the sensitive part upon irradiation of light by the light irradiator.

A retraction cord for use in a dental procedure for widening the gingival sulcus containing kaolin. The kaolin acts as a hemostatic agent and an absorber or hydrophilic agent to reduce bleeding and dry the gingival sulcus. A binder may be used to aid in retention of the kaolin on the fibers of the retraction cord. A lubricant or release agent may be used preventing blood clots from sticking to the retraction cord upon removal. Kaolin is affected and has no adverse side effects.

A method and a device for effecting the cordless retraction of the gingival sulcus tissue that includes a cap or dam to be fitted onto a tooth. The well of the cap is pre-filled with a predetermined amount of a flowable non-setting kaolin based retraction material having a heavy viscosity or putty consistency. The preloaded cap is fitted to a prepared tooth so that when pressure is applied onto the cap, the retraction material is displaced under pressure and forced to flow into the sulcus, causing the gingival tissue to retract away from the tooth to enlarge the gingival sulcus. An internal ridge aids in retaining the retraction material within the cap.

A rolled compression cap having a central bore. The rolled compression cap has adjacent layers that slide or telescope to conform to the prepared tooth and to apply more direct mechanical pressure to the interface between the prepared tooth and the gingiva. The gingiva or gum retracts from the tooth forming or widening a gingival sulcus. This improves the preparation of the tooth for taking an impression and fitting a crown or cap. In one embodiment, a rolled compression cap is pre-dosed or soaked with an astringent material or retraction agent. In another embodiment, the central bore of the rolled compression cap is filled with a paste-like or gel material containing an astringent or hemostatic agent.

The invention discloses a toothbrush handle and a toothbrush. The toothbrush handle and the toothbrush facilitate gingival sulcus dental plaque cleaning by users. According to the technical scheme, a toothbrush handle comprises a base capable of being held by a user, one end of the base is provided with a connecting end for mounting an external brush head, and the holding surface of the base is provided with a first extending surface and a second extending surface; on the cross-section diagram of the base, the first extending surface and the second extending surface are fundamentally symmetrically arranged long the central line of the base, the obtuse angle formed between the first extending surface and the central line ranges between 130 degrees and 140 degrees., and he obtuse angle formed between the second extending surface and the central line ranges between 130 degrees and 140 degrees; when the external brush head is mounted at the connecting end, the central line is fundamentally positioned onto the brush hair symmetric surface of the external brush head.

Disclosed are applicators and methods for injecting a liquid, such as anesthetic, into a patient with no or minimal pain. The applicator includes a coupling and a blade rotatably mounted on the coupling. The coupling is arranged to receive a cartridge in which a cannula is mounted such that the cannula extends through a proximal channel of the coupling and into a distal channel of the blade. The coupling is further arranged to secure the applicator to a source of liquid such that the liquid can be selectively introduced into and through the cannula into the tissue of the patient. The blade is thin enough for atraumatic insertion into a gingival sulcus of the patient.

The invention discloses a forward tooth protecting electric toothbrush. The forward tooth protecting electric toothbrush comprises a toothbrush body, batteries are arranged in a brush handle of the toothbrush body, the batteries are electrically connected with a motor through a lead, and a switch is arranged on the lead; an output terminal of the motor is fixedly connected with a rotation shaft, the other end of the rotation shaft is fixedly connected with a third plastic gear, and a left-end rotating shaft of the third plastic gear is fixedly connected with an upper toothbrush head; a fourthplastic gear is engaged with a lower end of the third plastic gear, and the left-end rotating shaft of the fourth plastic gear is fixedly connected with a left toothbrush head; the left-end rotating shaft of the first plastic gear is fixedly connected with a right toothbrush head, and a protection pad is fixedly connected with an outside part of a brush head of the toothbrush body. The design of the electric toothbrush is novel, three hairbrush heads are arranged, tooth, slit between teeth and gingival sulcus can be brushed through forward rotation, dead corner-free cleaning can be thoroughlyrealized, and the electric toothbrush can effectively prevent the gum from bleeding and protect teeth from being broken, and reduces oral diseases.

The invention discloses an electric tooth cleaner brush head, an electric tooth cleaner and a tooth cleaning method. The electric tooth cleaner brush head comprises a toothbrush head body and a connecting sleeve, the brush head body comprises a base body, a left tooth cleaning assembly, a right tooth cleaning assembly and an inserting column, wherein the left tooth cleaning assembly and the righttooth cleaning assembly are arranged on the base body and are the same in structure. The left tooth cleaning assembly and the right tooth cleaning assembly to form an included angle; bristles are distributed on the front end faces of the left tooth cleaning assembly and the right tooth cleaning assembly towards the longitudinal extending face of the included angle bisector, tongue coating scrapingunits are arranged on the rear end faces of the left tooth cleaning assembly and the right tooth cleaning assembly, and the connecting sleeve is arranged below the base body through the connecting part and covers the inserting column. According to the invention, the left tooth cleaning assembly and the right tooth cleaning assembly are arranged, teeth can be cleaned in multiple aspects, the electric tooth cleaner is matched with a vibration motor of the electric tooth cleaner, so that the bristles can extend into the fossa, gingival sulcus and tooth slits of the teeth in a high-frequency front-back vibration mode, stains and germs are further extracted, and meanwhile, the tooth brushing efficiency is improved.